Investment in Constellation Energy Nuclear Group, LLC (Tables)

6 Months Ended

Jun. 30, 2012

Equity Method Investments and Joint Ventures Tables [Line Items]

Schedule of total equity in earnings of investment in CENG

	Three Months			For the Period March 12,
	Ended June 30,			through June 30,
	2012		2012
CENG	$	4	$	(5)
Amortization of basis difference in CENG		(62)		(74)
Total equity investment income (loss) - CENG	$	(58)	$	(79)

Schedule of summarized income statement information for CENG

	Increase/(Decrease)		Increase/(Decrease)
	in Earnings		in Earnings			Accounts
	Three Months		For the Period		Income	Receivable/
	Ended		March 12 through		Statement	(Accounts Payable)
Agreement	June 30, 2012		June 30, 2012		Classification	At June 30, 2012
PPA	$	(216)	$	(251)	Purchased power and fuel	$	(90)
PSAA (a)		3		4	Operating revenues		-
ASA		12		15	Operating expenses		4

________________

• Includes $2 million of amortization related to the intangible contract liability established in purchase accounting.

Exelon Generation Co L L C [Member]

Equity Method Investments and Joint Ventures Tables [Line Items]

Schedule of total equity in earnings of investment in CENG

	Three Months			For the Period March 12,
	Ended June 30,			through June 30,
	2012		2012
CENG	$	4	$	(5)
Amortization of basis difference in CENG		(62)		(74)
Total equity investment income (loss) - CENG	$	(58)	$	(79)

Schedule of summarized income statement information for CENG

	Increase/(Decrease)		Increase/(Decrease)
	in Earnings		in Earnings			Accounts
	Three Months		For the Period		Income	Receivable/
	Ended		March 12 through		Statement	(Accounts Payable)
Agreement	June 30, 2012		June 30, 2012		Classification	At June 30, 2012
PPA	$	(216)	$	(251)	Purchased power and fuel	$	(90)
PSAA (a)		3		4	Operating revenues		-
ASA		12		15	Operating expenses		4

________________

• Includes $2 million of amortization related to the intangible contract liability established in purchase accounting.